[MEDIK418]

One reason for using propane as a fuel is for the emissions. The stuff burns super clean and to get back to the original question, yes, it would be a good way to pass an emissions test. As far as why people use it, you can go a little further on propane per dollar. The problem with outfitting a whole fleet is the rediculous expense of installing the equipment to do it. You can liken it to NOS. You have a pressurized tank, the extra fuel line and the switches and valves to switch back and forth between the two fuels. Same hardware. . .but no power gain. Another plus is the ability to gat an equal amount of work out of a fuel tank that is a lot smaller compared to a gasoline tank. 1 cu.ft. of liquid propane expands to 270 cu, ft of gas. It's hard for me, with my limited brain, to draw the correlation between gallons of gasoline vs. pounds of propane but when all pans out they're about the same costwise. Plus. . as I said earlier, the performance loss doesn't seem worth the trouble.